<input type="hidden" name="{person}[user]" value="1" />
<input type="hidden" name="{person}[parents]" value="{parents}" />

<div class="line">
    <label for="firstnames">Firstnames</label>
    <input type="text" name="{person}[firstnames]" id="firstnames" />
</div>

<div class="line">
    <label for="lastname">Lastname</label>
    <input type="text" name="{person}[lastname]" id="lastname" />
</div>

<div class="line">
    <label for="maidenname">Maiden name</label>
    <input type="text" name="{person}[maidenname]" id="maidenname" />
</div>

<div class="line">
    <label for="nickname">Nickname</label>
    <input type="text" name="{person}[nickname]" id="nickname" />
</div>

<div class="line">
    <label for="gender">Gender</label>
    <input type="radio" name="{person}[gender]" value="1" /> M
    <input type="radio" name="{person}[gender]" value="2" /> F
</div>

<div class="line">
    <label for="birthdate">Birthdate</label>
    <input type="text" name="{person}[birthdate]" id="birthdate" />
</div>

<div class="line">
    <label for="deathdate">Deathdate</label>
    <input type="text" name="{person}[deathdate]" id="deathdate" />
</div>